On Sun, Jan 11, 2015 at 11:09:23PM +0100, Heiko St?bner wrote: > rk3288 SoCs have a function to automatically switch between jtag/sdmmc pinmux > settings depending on the card state. This collides with a lot of assumptions. > > It only works when using the internal card-detect mechanism and breaks > horribly when using either the normal card-detect via the slot-gpio function > or via any other pin. Also there is of course no link between the mmc and jtag > on the software-side, so the jtag clocks may very well be disabled when the > card is ejected and the soc switches back to the jtag pinmux. > > Leaving the switching function enabled did result in mmc timeouts and rcu > stalls thus hanging the system on 3.19-rc1. Therefore disable it in all cases, > as we expect the devicetree to explicitly select either mmc or jtag pinmuxes > anyway. > > Signed-off-by: Heiko Stuebner <heiko at sntech.de> Thanks, applied. -Olof
